What should you know about blood pressure med lisinopril?

Lisinopril is an ACE inhibitor used for hypertension and sometimes other heart or kidney-related reasons. It reduces signals that tighten blood vessels, helping blood move with less resistance. It may take time for your readings to settle, so feeling well does not show whether treatment is working. A dry cough, dizziness, headache or stomach upset can occur. Blood tests may be used to check kidney function and potassium, especially after starting or changing treatment.

Take lisinopril exactly as prescribed and keep a record of home readings if your clinician recommends this. Rise slowly if you feel light-headed, and tell your prescriber about kidney disease, dehydration, diabetes or medicines and supplements you use. Do not take it during pregnancy unless a specialist has specifically directed a safe plan; contact your clinician promptly if pregnancy is possible. Do not stop it on your own, because blood pressure can rise again. [Blood Pressure Medication](/treatments/medical-management/blood-pressure-medication/) and [Ambulatory Blood Pressure Monitoring](/treatments/diagnostics-and-screening/ambulatory-blood-pressure-monitoring/) provide useful background.

Seek emergency help for swelling of the lips, tongue or throat, trouble breathing, fainting, chest pain, or sudden weakness, speech trouble or confusion. Contact a clinician promptly for a persistent cough, severe dizziness, much less urine, marked weakness or repeated unusually low readings. A headache alone has many possible causes, but a sudden severe headache with neurological symptoms needs urgent assessment.

Ask why lisinopril was chosen, when kidney and potassium tests are needed, what reading should prompt a call, and which painkillers or supplements may interact with it.